(4Z,6Z)-4,6-Bis(4-meth-oxy-benzyl-idene)-2,2-dimethyl-1,3-dioxan-5-one.

Acta Crystallographica. Section E, Structure Reports Online
Mohammad M MojtahediA Wahid Mesbah

Abstract

The title compound, C(22)H(22)O(5), crystallizes with two independent mol-ecules in the asymmetric unit, both of which possess pseudo-C(s) symmetry. The central 1,3-dioxanone rings have envelope conformations, with the C atom bearing the two methyl groups at the flap. The benzene rings of the meth-oxy-benzyl-idene units, attached in the 4- and 6-positions on the central 1,3-dioxanone rings, are tilted in the same direction with dihedral angles varying between 8.2 (1) and 18.1 (1)°. The crystal packing is influenced by π-stacking inter-actions of the parallel displaced type [centroid-centroid distance of 3.723 (1) Å for mol-ecule 1 and 3.884 (1) Å for mol-ecule 2, with ring slippages of 1.432 and 1.613 Å, respectively] and the T-shaped type, with the long mol-ecular axes all aligned along [010].

References

Jan 1, 1995·Acta Crystallographica. Section A, Foundations of Crystallography·R H Blessing
Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
Jan 1, 2010·Acta Crystallographica. Section E, Structure Reports Online·Tara ShahaniS Sarveswari
Jul 15, 2011·Acta Crystallographica. Section E, Structure Reports Online·Volodymyr V NesterovVladimir N Nesterov
Feb 22, 2012·Acta Crystallographica. Section E, Structure Reports Online·M Saeed AbaeeA Wahid Mesbah
Mar 14, 2012·Acta Crystallographica. Section E, Structure Reports Online·Klaus HarmsA Wahid Mesbah

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